West Sunbury, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for West Sunbury, a borough in Butler County, Pennsylvania.
This Afternoon
76°F
Mostly Sunny
Mostly sunny, with a high near 76. North wind around 6 mph.
7-day forecast for West Sunbury
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Mostly Sunny | 6 mph N | 10% |
| Tonight | 54°F | Partly Cloudy | 6 mph NE | 10% |
| Saturday | 75°F | Partly Sunny then Slight Chance Rain Showers | 6 mph E | 15% |
| Saturday Night | 61°F | Mostly Cloudy then Showers And Thunderstorms | 6 mph SE | 76% |
| Sunday | 75°F | Showers And Thunderstorms | 7 mph SW | 95% |
| Sunday Night | 54°F | Showers And Thunderstorms | 6 to 9 mph N | 79% |
| Monday | 68°F | Slight Chance Rain Showers | 10 mph NE | 22% |
| Monday Night | 53°F | Chance Rain Showers | 12 mph E | 54% |
| Tuesday | 64°F | Rain Showers Likely | 13 mph E | 62% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 14 mph E | 63% |
| Wednesday | 62°F | Rain Showers Likely | 14 mph E | 63% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 13 mph E | 53% |
| Thursday | 64°F | Chance Rain Showers | 10 mph E | 42% |
| Thursday Night | 50°F | Slight Chance Rain Showers | 7 mph NE | 19% |
Forecast source: National Weather Service (api.weather.gov) for West Sunbury (41.006, -79.896). Updated through the day.
Growing snapshot for West Sunbury
Last spring frost
May 7
First fall frost
Oct 14
Growing season
158 days
Hardiness zone
6a
More local growing data for West Sunbury: nearby ZIP 16061 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Barkeyville
Boyers
Bruin
Butler
Callery
Cherry Valley
Chicora
Connoquenessing
East Butler
Eau Claire
Evans City
Fairview
Fenelton
Forestville
Harlansburg
Harmony
Harrisville
Homeacre-Lyndora
Karns City
Lake Arthur Estates
Mars
Meadowood
Meridian
Nixon
North Washington
Oak Hills
Petrolia
Portersville
Prospect
Renfrew
Climate data from the nearest NOAA station, Slippery Rock 1 Ssw, Pa (9.8 mi from West Sunbury). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.